ISHS Acta Horticulturae 145: Symposium on the Use of Fertilizers in Protected Vegetable Production
THE COMPARISON OF TOTAL AND SOLUBLE FRACTION OF MINERAL ELEMENTS IN TOMATOE LEAVES |
| Author: | W. Oswiecimski |
| Abstract:
In dried and grinded tomatoe leaves the total and 2% acetic acid fractions of mineral elements were determined. The total content of N, P, K, Ca and Mg was determined after a digestion with a mixture of sulphuric and perchloric acid. The same materials were treated by 2% acetic acid and after 15 minutes of shaking, N-NH4, N-NO3, P, K, Ca and Mg were determined. In the case of P, K, Ca and Mg it was stated that there is a significant correlation between both methods of the analysis. The 2% acetic acid extracted the following per cent of mineral elements: 81.5% P, 95% K, 55% Ca and 93% Mg. | |
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